Multi loop based control of photovoltaic system connected to the single phase grid

This paper investigates the control problems of the single-phase grid connected to the photovoltaic system through an inverter with LCL filter. The control objectives are threefold: (i) forcing the voltage in the output of PV panel to track a reference signal provided by the MPPT block; (ii) regulat...

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Bibliographic Details
Main Authors: Aouadi, Chaouqi, Abouloifa, Abdelmajid, Lachkar, Ibtissam, Hamdoun, Abdelatif, Boussair, Yasser, Aourir, Meriem, Mchaour, Youssef
Format: Conference Proceeding
Language:English
Subjects:
Averaging model
Choppers (circuits)
Integrated circuit modeling
Inverters
LCL filter
Lyapunov methods
Lyapunov stability
Mathematical model
MPPT
PFC
Photovoltaic systems
PV-array
Sliding mode technique
Voltage control
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Summary:This paper investigates the control problems of the single-phase grid connected to the photovoltaic system through an inverter with LCL filter. The control objectives are threefold: (i) forcing the voltage in the output of PV panel to track a reference signal provided by the MPPT block; (ii) regulating the DC link voltage to ensure the power transferring from the source to the grid; (iii) providing a current with sinusoidal waveform and in phase with the grid voltage by means of controlling DC/AC converter (PFC). Firstly, a simulation module based on the mathematical model of a PV panel is utilized to predict the maximum total power from PV array. Secondly, a nonlinear module based on the mathematical equations of the whole controlled system is developed. At last, a nonlinear multi-loop controller is synthesized using the sliding mode technique. The results are confirmed by simulations which show that the proposed regulator is robust with respect to changes of Climate factors.
ISSN:2380-7393
DOI:10.1109/IRSEC.2016.7983961